Can anyone help/give advice. I have a 03 rzn149r hilux 2wd. Recently (late June) i had the passenger rear axle seal replaced due to a slight leak of oil into the rear drum. The leak was only minor however i wanted to have the problem fixed. Everything was fine and had no issues with the car. However 2 months later suddenly i have noticed oil around the rear tyre. I pulled the tyre off and also the drum off to discover a major leak present. The rear shoes are covered in oil and the rear diff oil level seams to be down half an inch. The leak itself has only just became apparent, as if the seal itself suddenly **** itself. So here lies my question/s. Is it the same seal leaking that i have already replaced. Maybe the seal wasn't fitted correctly or the seal itself is faulty. Is there any specific tricks to ensuring a correct fitting. Or is there more than 1 seal (an inner and outer seal). If so, should i have replaced both seals at the same time. If either seal was faulty would the leak be apparent in the same area or can you differentiate between each seal from where the leak is evident. Could it be an inferior seal (ie not a genuine seal). Any help advice would be much appreciated.